To RCBS Uniflow users....

rwsmith

rwsmith

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The Uniflow is one of the best things I've invested in. Question for users.

Do you use a baffle in the powder hopper? Is there any improvement. The reason I ask is that the opening to the measuring disc is pretty huge.
 
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I use the baffle in the powder hopper and it makes a big difference in the accuracy of your powder throws.

Without the baffle, you need to keep a consistent amount of powder in the hopper in order to get more uniform powder throws. Some recommend keeping it at least half full.

Evidently the weight of the powder has an effect on the accuracy of the powder throws coming out of the hopper.

With the baffle, there's always the same weight bearing down.
No matter if the hopper is half full or almost empty.

.
 
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I use the baffle in my Uniflow. Before getting it, I was careful with the powder level but found consistent throws over a fairly wide fill range. The baffle is a real convenience. Makes the Uniflow into a true "fill and forget" measure.
 
Finally made one for it.Prior to that,when using unique,I'd refill the hopper when it was down a third and it give it two taps with the handle up and again when it was down.With a baffle none of that is needed.Flashing or cardboard will work.
If your uniflow only came with one rotor,it's for rifle loads.
 
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I've got a Uniflow with the large (rifle) rotor and I've not felt compelled to make/use a baffle. Throws for rifle as well as pistol (~4 gr) have been quite consistent. I try to keep it filled to a reasonably consistent level.
 
In a word - yes. Makes for much more uniformity in the loads. Set and forget, check every so often, however, I rarely find any difference from original setting.
Dave
SWCA #2778
 
I use a baffle, powder measure weight and a micrometer adjustable rotor....makes the Uniflow just about the most accurate and versatile of all (4) of my powder measures with the Redding having a slight advantage on very small pistol charges.
 
old&slow said:
I agree with JBnTx. Made my baffle out of a piece of roof flashing
and a diagram I found on the internet.
Click to expand...

My whole setup was purchased "used" and it was all RCBS equipment. The Uni-Flow was included.

Upon immediate research, I found the recommendation to use the baffle. Considering I didn't want to pay money for one, I also found the diagram online to make my own, and I also used a scrap piece of roof flashing/duct work flashing.

The baffle definitely helps with metering, as the weight of the powder affects it. By using the baffle, it keeps the powder uniform and metering perfect.

If I were you, I would make my own. Really simple. If you can't find the online diagram, I have it saved to my computer and can share the PDF with you.

My Uni-Flow is so accurate that I can load hundreds of rounds without checking the powder weight because it stays where set and consistently meters so well. I still check about every 50rds though, but every time it isn't needed.
 
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iPac said:
My whole setup was purchased "used" and it was all RCBS equipment. The Uni-Flow was included.

Upon immediate research, I found the recommendation to use the baffle. Considering I didn't want to pay money for one, I also found the diagram online to make my own, and I also used a scrap piece of roof flashing/duct work flashing.

The baffle definitely helps with metering, as the weight of the powder affects it. By using the baffle, it keeps the powder uniform and metering perfect.

If I were you, I would make my own. Really simple. If you can't find the online diagram, I have it saved to my computer and can share the PDF with you.

My Uni-Flow is so accurate that I can load hundreds of rounds without checking the powder weight because it stays where set and consistently meters so well. I still check about every 50rds though, but every time it isn't needed.
Click to expand...

Wow, that's just about unanimous. I'm getting one ASAP make it or buy it. Yes, I can accept a lot more variations in rifle loads and I never use max load in them. The big Lee Scoops work fine. But that low end between 1 and 20 grains is pretty critical for pistol.
 
rwsmith wrote:
Do you use a baffle in the powder hopper?
Click to expand...

No.

I keep the reservoir filled to a consistent level and tap the body of the measure on each throw to ensure settling.

For most loads, I throw light and trickle up to the desired weight so the repeatability of the measure is not critical. When I do throw rifle loads directly to the case and not the pan on the balance, they are generally +/- 0.1 grain when I randomly check-weigh the thrown charge to ensure it has remained consistent.

If you do think a baffle will be useful, try building one at home and see if it doesn't meet your needs before buying one.
 
Yes, I use a baffle. The home-made type fashioned from an aluminum soda pop can.

Yes, it makes a difference...especially with difficult powders such as Unique and 700X.
 
Bought at baffle several years ago, installed it, and never looked back. The baffle ensures consistent pressure on the powder charge being thrown.

Good Luck with your reloading.
 
A lot of people like the way the baffles help steady your powder
weight wise with a full or empty tube............

However I seldom have more than a 70% tube fill and lots of
times, I just have about a 33% fill for a small loading with just
one powder, with another powder up next.

Not saying that my RCBS is an older model but it is actually a ......
Red Pioneer and if it breaks, I will have to get parts from Hornady.

So I am one of the few that do not use a baffle......
even though they are only $9 at the Sportsmans whse.
 
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